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Volumn 130, Issue 1, 2008, Pages 66-73

Spectroscopic characterization of photolytically generated radical ion pairs in single-wall carbon nanotubes bearing surface-immobilized tetrathiafulvalenes

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRON BEAMS; ELECTRON ENERGY LEVELS; ELECTRON TRANSITIONS; PHOTOEXCITATION;

EID: 38349114820     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja073975t     Document Type: Article
Times cited : (119)

References (88)
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    • (b) Sgobba, V.; Rahman, G. M. A.; Ehli, C.; Guldi, D. M. In Covalent and Non-Covalent Approaches Towards Multifunctional Carbon Nanotube Materials - Fullerenes; Langa de la Puente, F., Nierengarten, J. F., Eds.; RSC Nanoscience and Nanotechnology Series; Cambridge, United Kingdom, 2007.
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    • Sgobba, V.; Rahman, G. M. A.; Guldi, D. M. Carbon Nanotubes in Electron Donor-Acceptor Nanocomposites. In Chemistry of Carbon Nanotubes; Basiuk, V. A., Ed.; American Scientific Publishers: Stevenson Ranch, CA, 2006.
    • (c) Sgobba, V.; Rahman, G. M. A.; Guldi, D. M. Carbon Nanotubes in Electron Donor-Acceptor Nanocomposites. In Chemistry of Carbon Nanotubes; Basiuk, V. A., Ed.; American Scientific Publishers: Stevenson Ranch, CA, 2006.
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    • Acc1
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    • For reviews, see: a
    • For reviews, see: (a) Hirsch, A. Angew. Chem., Int. Ed. 2002, 41, 1853-1859.
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    • 20144378902 scopus 로고    scopus 로고
    • X-ray photoemission spectroscopy (XPS) and near-edge X-ray-absorption fine structure (NEXAFS) spectroscopy signatures of carrier-doped SWNT have been investigated. See: Shiraishi, M.; Swaraj, S.; Takenobu, T.; Iwasa, Y.; Ata, M.; Unger, W. E. S. Phys. Rev. B 2005, 71, 125419.
    • X-ray photoemission spectroscopy (XPS) and near-edge X-ray-absorption fine structure (NEXAFS) spectroscopy signatures of carrier-doped SWNT have been investigated. See: Shiraishi, M.; Swaraj, S.; Takenobu, T.; Iwasa, Y.; Ata, M.; Unger, W. E. S. Phys. Rev. B 2005, 71, 125419.
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    • 60-exTTF conjugates, see: (a) Martín, N.; Sánchez, L.; Guldi, D. M. Chem. Commun. 2000, 113-114.
    • 60-exTTF conjugates, see: (a) Martín, N.; Sánchez, L.; Guldi, D. M. Chem. Commun. 2000, 113-114.
  • 79
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    • We estimated the functionalization of SWNT with pyrene-exTTF to 7, 5%/70, The SWNT/pyrene-exTTF nanohybrids are constituted roughly of 93% of carbon (from nanotubes) and 7% of exTTF derivative; the amount of functional group is (93/MC, 7/MPyrene-exTTF) ≈ 750. The low ratio is likely due to the solubility of pyrene-exTTF in THF. Obviously, we formulate a competition between the SWNT immobilization and the complete solubilization by the solvent. The mechanism is quite different from the case noted for amphiphilic pyrene derivatives that we used in previous work, where a ratio of 1 to 280 carbon atoms was extrapolated ref 6d, Amphiphilic pyrene derivatives form aggregates in water and in the presence of SWNT; the association of the apolar moiety with the SWNT sidewall results in a gain of energy leading to a stable suspension
    • Pyrene-exTTF) ≈ 750. The low ratio is likely due to the solubility of pyrene-exTTF in THF. Obviously, we formulate a competition between the SWNT immobilization and the complete solubilization by the solvent. The mechanism is quite different from the case noted for amphiphilic pyrene derivatives that we used in previous work, where a ratio of 1 to 280 carbon atoms was extrapolated (ref 6d): Amphiphilic pyrene derivatives form aggregates in water and in the presence of SWNT; the association of the apolar moiety with the SWNT sidewall results in a gain of energy leading to a stable suspension.
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    • In time-resolved fluorescence measurements the only detectable component reveals a lifetime of around 16 ns
    • In time-resolved fluorescence measurements the only detectable component reveals a lifetime of around 16 ns.
  • 88
    • 38349127730 scopus 로고    scopus 로고
    • The spectrum of the reduced state was determined by simply subtracting the changes, seen in the differential absorption spectrum, from the ground state
    • The spectrum of the reduced state was determined by simply subtracting the changes - seen in the differential absorption spectrum - from the ground state.


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